Apr 16, 2013 11:00pm PDT
decades for the fbi to locate and arrest the unabomber, ted kaczynski. within the last hour nbc news has confirmed a letter bomb -- not a letter. i should say a letter that tested positive for ricin or some other toxic substance was addressed to senator roger wicker of mississippi. it was intercepted before reaching the senator's office. let's begin this hour with nbc justice correspondent pete williams and former cia counterterrorism director larry johnson. two best guests we could have. pete, let's go back to that picture we just saw from whdh up there, boston affiliate of nbc. what are the experts making of the fact that it was there, that bag, whatever it is sitting there before the explosion and then in this picture taken afterwards you can see the smoke trailing up to the left there diagonally? what does that tell us? >> it tells us it's something they're investigating, chris. they know, they believe very strongly that the bombs were brought to the scene in backpacks. but i think it's fair to say they're looking at whether after they got there, they put them in these shopping bags.
Apr 17, 2013 2:00am PDT
room. >> were you knocked to the ground? >> i wasn'ted knocked to the ground. i absolutely knew that i was hit with something, because the pain that shot through my leg was -- was incredible. >> reporter: meanwhile, across the country, tributes to remember those lost, with the red sox playing away in cleveland, the indians held a moment of silence for the bombing victims. and the new york yankees put their rivalry aside tuesday night to pay their respects, posting this message on the yankee stadium marquee, united we stand. and playing the fenway park favorite "sweet caroline" in the bronx. ♪ sweet caroline good times never seemed so good ♪ >> reporter: back on the streets of boston an eerie quiet on normally busy streets. for megan keilar, returning to the scene after memories of the explosion brought back overwhelming emotions. >> i think i just kind of -- to be honest. i feel sadly for everybody. but it's, you know, people are waking up today and their lives are very different. >> an outpouring of emotion throughout the city this morning. last night hundreds turned out in the bo